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20120203091

DEVICES AND METHODS FOR MONITORING CEREBRAL HEMODYNAMIC CONDITIONS - Devices, and methods for measuring bioimpedance signals are disclosed. One aspect may include a headset apparatus including a retainer and electrodes. The retainer may be configured to position the electrodes on the head of a subject so as to obtain bioimpedance signals indicative of hemodynamic conditions associated with an MCA territory. A processor may be included to measure and analyze the obtained bioimpedance signals, and to output information for predicting hemodynamic conditions associated with an MCA territory.

08-09-2012

20140343389

Wireless Monitoring Device - The present invention relates to a monitor and monitoring system suitable for attachment to the skin of a mammal, including a human. The monitor and monitoring system are designed for continuous wireless real-time measurement of physiological signals and transmission of the measurements to a remote computer or mobile device.

11-20-2014

20140350376

DEVICE FOR IN-VIVO DETERMINATION OF EYE MOISTURE - A medical diagnostic device and method, the device including: (a) an alternating current source, adapted to produce an alternating current; (b) an electrode arrangement having at least first and second electrodes, separated by an electrically insulating region, the arrangement having an at least semi-rigid region that fixes the electrodes in a spaced-apart manner, the arrangement adapted to contact the soft tissue on the inner surface of the eyelid; and (c) a processor, associated with the electrode arrangement, said electrodes electrically connected to the alternating current source; wherein, when the electrode arrangement is provided with the alternating current, and is disposed against the soft tissue, the soft tissue electrically bridges between the electrodes to form an electrical circuit, wherein an electrical signal is produced by the alternating current electrically passing between the electrodes via the soft tissue; wherein the processor is adapted to receive in-vivo based electrical information originating from the electrical signal, via the circuit, and to produce an output relating to, or derived from, the moisture parameter, based on the in-vivo electrical information; and wherein the processor is designed and configured to compute the moisture parameter in the soft tissue, at least partially based on the in-vivo electrical information, and based on an empirical correlation between the in-vivo electrical information and the moisture parameter.

11-27-2014

20130066183

ACTIVE DRY SENSOR MODULE FOR MEASUREMENT OF BIOELECTRICITY - An active dry sensor module for measurement of bioelectricity is disclosed. The active dry sensor module of the present invention excludes the use of a conductive gel, thereby not supplying unpleasantness and discomfort to a reagent and preventing the interference of the signal due to a noise component. Further, the active dry sensor module of the present invention amplifies the biomedical signal to a desired level, thereby precisely and easily measuring the biomedical signal.

DRY ELECTRODE CAP FOR ELECTRO-ENCEPHALOGRAPHY - An electro-encephalography electrode cap for contacting the scalp of a head with a number of pin-shaped electrodes for contacting the scalp, and an electrode holding device. The electrodes are mounted on the electrode-holding device through at least one elastic joint.

08-05-2010

20110295099

Electrode kit for easy and fast deployment in electroencephalogram acquisition and monitoring applications - Electrodes for use in electroencephalographic recording, including consciousness and seizure monitoring applications, have novel features that speed, facilitate or enforce proper placement of the electrodes, including aligning tabs and arrowed aligning juts, color coding, and an insulating bridge between reference and ground electrodes which ensures a safe application distance between the conductive regions of the two electrodes in the event of cardiac defibrillation. A method of using a set of four such electrodes is also disclosed.

12-01-2011

20120108940

Device and method for pupil size modulation - A device and method are presented for drug-free, non-invasive, modulation of a size of a patient's pupil. The invention utilizes application of an external electric and/or magnetic field of desired properties to the patient's iris to thereby effect stimulation or neutralization of synapses and thus temporarily inducing mydriasis or miosis effect.

05-03-2012

20090088619

Self-Locating Sensor Mounting Apparatus - A self-locating mounting apparatus for holding objects such as sensors at specific positions on a subject's head includes a central mount constituted by a plurality of inextensible elements adapted to fit over the top of a subject's head. In addition, the mounting apparatus includes an adjustable circumferential band adapted to circle the subject's head and connect the central mount to inextensible side elements via sliding joints. A plurality of biasing elements provide a force for biasing sensor mounting units on the mounting apparatus against a subject's head, allowing for long-term sensing while minimizing interference forces on the mounting units. Advantageously, the mounting apparatus holds sensors within approximately 5 mm of their desired measurement positions over a range of subject head sizes.

04-02-2009

20120296191

TRANSDUCER MOUNTINGS AND WEARABLE MONITORS - A transducer mounting comprising a compliant elongate support member having a skin engaging surface, adhering means to adhere the skin engaging surface to a wearer's head, and a plurality of transducers longitudinally spaced on the skin engaging surface. A wearable monitor comprising adhering means for adhering the wearable monitor to skin, a skin-facing surface with a transducer thereon for either or both stimulating a physiological response and measuring a physiological parameter, and display means or audio output means integral to the wearable monitor for displaying a signal related to a measured physiological parameter on the wearable monitor or transmitting a sound related to a measured physiological parameter from the wearable monitor, respectively.

11-22-2012

20140024913

NEUROPHYSIOLOGIC PERFORMANCE MEASUREMENT AND TRAINING SYSTEM - Preferably, an embodiment of an apparatus includes at least a plurality of sensor assemblies, wherein each sensor assembly provides at least one electrically responsive surface, and an oscillation device communicating with the sensor assembly. Preferably, the sensor assembly includes at least a signal processing circuit in electrical communication with the oscillation device to selectively agitate the at least one electrically responsive surface. The preferred apparatus further included a brainwave processing system communicating with each of the plurality of sensor assemblies, and a ground reference interacting with the brainwave processing system, wherein a selected one of the plurality of sensor assemblies provides a reference signal for each of the remaining sensor assemblies, and in which each electrically responsive surface is in pressing contact with a cranium of a subject.

01-23-2014

20150051468

BLOOD PULSE MEASUREMENT BASED ON CAPACITIVE SENSING - A capacitive sensing system is adapted for noninvasive measurement of blood pulse (hear rate). A capacitive sensor is located near a skin pulse point exhibiting pulse displacement of skin tissue from vascular pulsation (for example, the temple area of the head), and includes a sensor electrode disposed over and spaced from the skin pulse point, such that the distance between sensor electrode and the skin pulse point cycles between a proximal and a distal displacement distance based on vascular pulsation. A capacitance-to-digital conversion (CDC) unit includes excitation circuitry providing sensor excitation to generate a sensor E-field between the sensor electrode and the skin pulse point based on sensor self-capacitance, and capacitance acquisition/conversion circuitry that acquires capacitance measurements for proximal and distal self-capacitance (for example, by multi-phase capacitive charge transfer using a switched capacitor arrangement), and converts these capacitance measurements into sensor data representative of vascular pulsation.

02-19-2015

20140378808

Comfortably Securing Physiological Sensors Onto A Person During Sleep - A physiological sensor apparatus comprises a physiological sensor, a headband and an eye mask. In one example, the physiological sensor includes a plurality of electroencephalography (EEG) electrodes that are used to sense a signal indicative of a sleep stage (e.g., REM sleep or non-REM sleep) of a user. Each end of the headband attaches to respective ends of the sensor and eye mask such that when the sensor is disposed on the forehead of the user, the eye mask shields the eyes of the user from visible light. The diameter of the headband is adjustable by the user to secure the sensor to the forehead of the user. The sensor accurately determines the sleep stages of the user over a period of sleep of the user because the adjustable headband and eye mask prevent the electrodes from being displaced from the forehead of the user during the period of sleep.

12-25-2014

20110224528

FLEXIBLE, MULTI-CHANNEL MICROELECTRODE FOR RECORDING LABORATORY ANIMAL EEG AND METHOD FOR RECORDING LABORATORY ANIMAL EEG USING THE SAME - Disclosed are a novel, elastic, biocompatible, micro-sized, polyimide-based multi-channel microelectrode for recording of electroencephalography (EEG) from a laboratory animal including mouse, and a method for recording of laboratory animal EEG using the microelectrode. The microelectrode may include 2 grounding electrodes and 32 recording electrodes. A connector for signal transmission easily connects the microelectrode to a signal acquiring apparatus. The total weight of the microelectrode, including the connector, does not exceed 150 mg. Laboratory animal EEG, including that of mouse, provides the advantage of monitoring the brain state of a freely moving animal following a genetic or pharmaceutical manipulation. The microelectrode can be implanted without surgery and may be detached from wires while EEG is not recorded from the laboratory animal. The microelectrode can successfully acquire broadband EEG signals from the skull of the laboratory animal and is effective in monitoring spatial and temporal pattern of brain activities of the laboratory animal.

09-15-2011

20090105577

Device For Detecting Electrical Potentials Using Frontal Electrodes - Embodiments relate to devices for detecting electrical potentials corresponding to biological signals. The device comprises a flexible member for positioning over a forehead area of a human head and first, second and third electrodes located on the flexible member. The first electrode is located in a projecting portion of the flexible member to be positioned adjacent a nasion area of the head. The second electrode is to be positioned over a first lateral forehead area. The third electrode is to be positioned over a second lateral forehead area opposite the first lateral forehead area.

04-23-2009

20120245450

DRY ELECTRODE DEVICE AND METHOD OF ASSEMBLY - An electrode set is disclosed that has two separable parts including an assembled base with printed circuit board basement, biasing member and top cover and an electrode. The basement and top cover may be made by metal or conductive material.

09-27-2012

20140323839

APPARATUS AND METHOD FOR TREATING OBSTRUCTIVE SLEEP APNEA - The present invention describes an apparatus, a systems and a method for the treatment of obstructive sleep apnea. the treatment involves monitoring the position of the tongue and/or the force exerted by the tongue an electrical stimulation of the hypoglossal nerve to move the tongue into an anterior position or to maintain the tongue in an anterior position.

10-30-2014

20120302859

TEST BATTERY SYSTEM AND METHOD FOR ASSESSMENT OF AUDITORY FUNCTION - A test battery method and system for use in assessing auditory function (e.g., the screening or diagnosis of impairments, fitting of hearing aids, etc.) is provided which performs one or more auditory tests including, for example, an acoustic reflectance test. Such an acoustic reflectance test may be a reflectance tympanometry test that includes a feedback system to control static pressure in the ear canal. Such acoustic reflectance tests may be used alone or in combination with one or more other auditory tests. Further, for example, such a battery of tests may include middle-ear muscle reflex tests in combination with one or more other auditory or hearing tests.

11-29-2012

20110257502

Electroencephalogram (EEG) Cluster Electrodes - Embodiments described herein include devices and systems comprising sensor electrodes. Each sensor electrode comprises contacts positioned adjacent one another to form a pattern. Signal outputs are coupled to the contacts. A signal output is connected to each contact. One or more processors are coupled to the signal outputs. The processor separately processes each of the signal outputs.

10-20-2011

20090112077

Contoured electrode - A contoured bioelectrical signal electrode and a sensor headset are disclosed. A contoured bioelectrical signal electrode that also includes a conductive fabric is also disclosed.

04-30-2009

20080294031

METHOD AND DEVICE FOR QUICK PRESS ON EEG ELECTRODE - Embodiments relate to methods and systems for monitoring bioelectric potentials. In some instances, an electrode is applied to a patient's skin. The electrode may be at least partly inserted into the patient's skin, such as by inserting at least part of one or more teeth underneath the skin.

11-27-2008

20090171181

Apparatus for detecting brain function - It is possible for the tips of all the electrodes to make contact with the scalp with greater reliability even with respect to different subjects, by adaptation to individual differences in the heads of subjects, and the functional status of the brain can be detected with greater accuracy. A brain function detection apparatus is provided which has a hat-shaped apparatus main body for mounting on the head of a subject, a plurality of electrodes for detecting brain wave signals, which are mounted in the apparatus main body separated from each other at intervals, and which are arranged in contact with the scalp, and the apparatus main body has a plurality of holder pieces in which at least one electrode is mounted, a bendable belt for linking the holder pieces, and a holder piece interval-adjusting apparatus for adjusting the distance between the holder pieces.

07-02-2009

20110118584

Electrode for Electroretinographic Use and Method of Application - A flexible loop electrode for electroretinographic (ERG) recordings of extra-corneal signals with a protective bead and a U-shaped electrode form that is particularly adapted for use with spectacles or a fixed mount. Means also employed to detect electrode integrity.

05-19-2011

20140371565

ACCOMMODATION STIMULATION AND RECORDING DEVICE - Embodiments described herein generally relate to devices and methods for stimulation or recording of accommodation of an eye. Accommodation of an eye naturally occurs through contraction of the ciliary muscle. Embodiments described herein can deliver electrostimulation to the ciliary muscle through a pair of electrodes which deliver power over an area of the sclera which is both positioned above and over an area which is substantially equivalent to the surface area of the ciliary muscle. In further embodiments, electrical impulses produced by the ciliary muscle can be received by one or more electrodes positioned proximate the ciliary muscle. Thus, by embodiments described herein, accommodation of the eye can be reproducibly achieved by external stimulation of the ciliary muscle or measured based on electrical impulses generated by or in conjunction with the ciliary muscle.

12-18-2014

20120179019

ELECTRODE SYSTEM WITH RIGID-FLEX CIRCUIT - An electrode system comprises a flexible circuit substrate and a plurality of electrode modules. The flexible circuit substrate comprises a flexible material and traces supported by the flexible material. The flexible circuit substrate extends through at least two of the electrode modules such that the electrode modules encompass portions of the flexible circuit substrate. Each electrode module comprises at least one rigid circuit member configured to process ERPs of a test subject. The rigid circuit members are layered against the flexible circuit substrate such that the rigid circuit members and the flexible circuit substrate together form a rigid-flex circuit. A sensor may be removably disposed through a substantially central opening defined by each electrode module.

METHODS AND DEVICES FOR BRAIN ACTIVITY MONITORING SUPPORTING MENTAL STATE DEVELOPMENT AND TRAINING - With explosive penetration of portable electronic devices (PEDs) recent focus into consumer EEG devices has been to bring advantages including localized wireless interfacing, portability, and a low-cost high-performance electronics platform to host the processing algorithms to bear. However, most development continues to focus on brain-controlled video games which are nearly identical to those created for earlier, more stationary consumer EEG devices and personal EEG is treated as of a novelty or toy. According to embodiments of the invention the inventors have established new technologies and solutions that address these limitations within the prior art and provide benefits including, but not limited to, global acquisition and storage of acquired EEG data and processed EEG data, development interfaces for expansion and re-analysis of acquired EEG data, integration to other non-EEG derived user data, and long-term user wearability.

10-23-2014

20140316229

APPARATUS FOR ELECTRODERMAL ACTIVITY MEASUREMENT WITH CURRENT COMPENSATION - An apparatus for measuring electrodermal activity can include a first electrode in contact with a first portion and a second electrode in contact with a second portion of a stratum corneum, and in electronic communication with the second electrode through the stratum corneum. A processing module is electrically coupled to the first electrode and the second electrode and is operable to (a) bias the first electrode at a first voltage V+ and the second electrode at a second voltage V− (b) measure a current flowing between the first electrode and the second electrode, the current corresponding to the conductance of the stratum corneum, (c) subtract a compensation current from the measured current (d) measure a resulting current producing an amplified output voltage (e) measure a conductance of the stratum corneum, and (f) adjust at least one of the first voltage, the second voltage and the compensation current to desaturate the output voltage.

EAR-WORN EEG MONITORING DEVICE - An ear-worn EEG monitoring device is disclosed. The EEG monitoring device includes plural electrodes, an EEG signal acquisition circuitry with RF module, at least a housing for accommodating the EEG signal acquisition circuitry with RF module, and at least an ear-worn structure, wherein the ear-worn structure can be implemented to mount on one or two ear(s) of the user, so that during the EEG monitoring process, the ear-worn structure can be used to hold and support the housing and the EEG signal acquisition circuitry therein at position(s) above and including the neck of the user, and the RF module is used for achieving a wireless communication with an external apparatus, so as to transmit acquired signals thereto.

01-06-2011

20130066184

CONTOURED ELECTRODE - A contoured bioelectrical signal electrode and a sensor headset are disclosed. A contoured bioelectrical signal electrode that also includes a conductive fabric is also disclosed. In some embodiments, a contoured bioelectrical signal sensor is provided that includes an electrode set and is connected to a holder that is connected to a headset.

03-14-2013

20120253164

ELECTRODE SYSTEM FOR CRANIAL NERVE STIMULATION - An electrode system for cranial nerve stimulation includes a support coupling part for coupling a support. The support coupling part has a stimulating electrode insertion part formed to couple a stimulating electrode at the bottom thereof. The electrode system further includes an electrode holder formed to couple to a connecting wire for supplying electricity to the stimulating electrode, and an anchor having an electrode holder insertion part formed with a hollow part into which the electrode holder coupled to the connecting wire is inserted, and fixed to the skull of a subject.

BIOSIGNAL MEASUREMENT DEVICE - A biosignal measurement device is proposed which can improve measurement accuracy without forcing an excessive burden on subjects.

07-26-2012

20110237923

DRY ELECTRODE FOR DETECTING EEG SIGNALS AND ATTACHING DEVICE FOR HOLDING THE DRY ELECTRODE - An electrode for detecting EEG signals comprises a body comprising a fixture on a first end of the body, and a sensor detachably held by the fixture, wherein the body has an external thread in a portion of the body extending from the first end of the body towards a second end of the body, and the sensor has a brush-like shape with pins protruding off the body. The electrode may be held by an attaching device for holding electrodes for detecting EEG signals, the attaching device comprising a strap including a plurality of holes for accommodating electrodes and a rotary closure connecting a first end of the strap and a second end of the strap.

09-29-2011

20150065838

ELECTRODE SYSTEM FOR ELECTRICAL STIMULATION - A system for electrically stimulating and/or detecting bioelectrical signals of a user comprising: an array of permeable bodies configured to absorb a solution that facilitates electrical coupling with a body region of the user; a housing defining an array of protrusions conforming to the body region and comprising: an array of channels distributed across the array of protrusions, each channel at least partially surrounding a permeable body, configured to deliver the solution to the permeable body, and comprising a barrier that prevents passage of the permeable body past the barrier, and a manifold configured to distribute the solution to the array of channels; and a coupling subsystem comprising a first electrical coupling region in electrical communication with an interior of the manifold, wherein the first electrical coupling region is configured to couple to a second electrical coupling region that couples the first electrical coupling region to the electronics subsystem.

03-05-2015

20120330125

Method And Device For Quick Press On EEG Electrode - Embodiments relate to methods and systems for monitoring bioelectric potentials. In some instances, an electrode is applied to a patient's skin. The electrode may be at least partly inserted into the patient's skin, such as by inserting at least part of one or more teeth underneath the skin.

12-27-2012

20130012802

Systems, Computer Medium and Computer-Implemented Methods For Monitoring and Improving Cognitive and Emotive Health of Employees - Provided are embodiments of systems, computer medium and computer-implemented methods for monitoring the health of an employee while the employee is located in an employee workstation. A method for monitoring the health of an employee while the employee is located in an employee workstation including collecting health data including neural data collected from one or more neural sensors disposed about the scalp of the employee, determining an employee health profile based at least in part on neural data, the employee health profile comprising one or more of health characteristics, health conditions and health risks for the employee, generating a health plan for the employee based at least in part on the employee health profile, and serving health content, including the employee health profile and the health plan, for display to the employee.

01-10-2013

20150126845

WEARABLE HEAD-MOUNTED, GLASS-STYLE COMPUTING DEVICES WITH EOG ACQUISITION AND ANALYSIS FOR HUMAN-COMPUTER INTERFACES - A apparatus for detecting electrooculograph (EOG) signals, comprising: a pair of temple pieces connected to a bridging structure; at least one electrode on each temple piece configured to contact the skin at the temple, and to receive an EOG signal from a proximate orbital socket; a reference electrode displaced from each temple; and a processor configured to process signals from the sensors to detect saccade movements of the eyes. A wavelet-based algorithm permits analysis and coding of the saccade movements.

05-07-2015

20150065839

SURGICAL DRAPE, EVOKED RESPONSE PROBES AND THEIR METHODS OF USE - The disclosure relates to a surgical cranial drape, probe for mapping brain of a subject and their methods of use. Specifically, the disclosure relates to a sterile surgical cranial drape embedded with electrodes; an system for mapping physiologically functional brain regions using evoked electrophysiological responses in a first and a second region; and their methods of use in combination or separately.

03-05-2015

20150065837

DEVICE FOR GENERATING A DETECTABLE SIGNAL BASED UPON CONCENTRATION OF AT LEAST ONE SUBSTANCE - Utilization of a contact device placed on the eye in order to detect physical and chemical parameters of the body as well as the non-invasive delivery of compounds according to these physical and chemical parameters, with signals being transmitted continuously as electromagnetic waves, radio waves, infrared and the like. One of the parameters to be detected includes non-invasive blood analysis utilizing chemical changes and chemical products that are found in the conjunctiva and in the tear film. A transensor mounted in the contact device laying on the cornea or the surface of the eye is capable of evaluating and measuring physical and chemical parameters in the eye including non-invasive blood analysis. The system utilizes eye lid motion and/or closure of the eye lid to activate a microminiature radio frequency sensitive transensor mounted in the contact device. The signal can be communicated by wires or radio telemetered to an externally placed receiver. The signal can then be processed, analyzed and stored. Several parameters can be detected including a complete non-invasive analysis of blood components, measurement of systemic and ocular blood flow, measurement of heart rate and respiratory rate, tracking operations, detection of ovulation, detection of radiation and drug effects, diagnosis of ocular and systemic disorders and the like.

03-05-2015

20140288406

LINE-CONTACT DRY ELECTRODE - A line-contact dry electrode comprises a conductive electrode base and at least one conductive contact member extending from the conductive electrode base. The conductive contact member includes a plurality of elastic conductive branches arranged intermittently to form a comb-like electrode able to comb and push away the testee's hair and contact the testee's skin.

09-25-2014

20150073249

BRAIN FUNCTION ACTIVITY LEVEL EVALUATION DEVICE AND EVALUATION SYSTEM USING IT - Discrete Fourier transform is performed on an output of each brain potential sensor, which measure a subject's brain potential, for each segment in order to obtain a discrete Fourier coefficient that has a frequency component. A mean value of squares of absolute values of Fourier coefficients is obtained. The Fourier coefficients are normalized using the mean value for obtaining a normalized power spectrum NPS;j,m. Mean values of squares of absolute values of Fourier coefficients of adjoining frequency components in all the segments is normalized using a square value of the mean values of the adjoining frequency components for obtaining a normalized power ratio NPV;j,m. Two markers sNAT;j,m and vNAT;j,m are derived from the power spectrum and power ratio for evaluating a brain function activity level.

03-12-2015

20130085363

ELECTROENCEPHALOGRAPHIC HEADSET - An electroencephalographic headset includes: a supporter that includes expanding and contracting wires each having expansion and contraction properties and is to be attached to a head of a user by expansion and contraction of each of the expanding and contracting wires; and a plurality of electrodes that are provided to the supporter in defined placement.

04-04-2013

20140257073

ELECTRODE ARRAY AND METHOD OF PLACEMENT - A headset for detecting brain electrical activity may include a flexible substrate having first and second ends each configured to engage an ear of a subject and dimensioned to fit across the forehead of a subject. The headset may also include a plurality of electrodes disposed on the substrate and configured to contact the subject when the headset is positioned on the subject. First and second electrodes may contact top center and lower center regions of the forehead, respectively, third and fourth electrodes may contact front right and front left regions of the forehead, respectively, fifth and sixth electrodes may contact right side and left side regions of the forehead, respectively, and electrodes included within the securing devices may contact the ear regions. The third and fourth electrodes may be moveable in at least a vertical direction relative to the other electrodes.

09-11-2014

20140275930

Methods, Devices And Systems For Photoplethysmography At The Nasal Columella - Provided according to embodiments of the invention are photoplethysmography (PPG) sensors, systems and methods of using the same. In some embodiments of the invention, methods of obtaining a photoplethysmography (PPG) signals include securing a PPG sensor onto a nasal columella of an individual; and obtaining a PPG signal from the PPG sensor.

09-18-2014

20140275929

NEURAL SENSING DEVICE AND METHOD FOR MAKING THE SAME - The present invention provides a neural sensing device and method for making the same. The neural sensing device includes a base, an integrated circuit portion, a plurality of microprobes and at least one conductive via. The base has an active surface and a backside surface. The integrated circuit portion is disposed on the active surface of the base. The microprobes protrude from the backside surface of the base. The through silicon via is disposed in the base and electrically connects the integrated circuit portion and the microprobes. Each of the microprobes includes an isolation layer partially covering a conductive layer.

09-18-2014

20150133762

BIOLOGICAL SIGNAL MEASURING EQUIPMENT - A biological signal measuring equipment used in a measurement of a biological signal in a head portion, has a jaw contact portion that comes into contact with a forehead; an occiput contact portion that comes into contact with an occiput; and a supporter that is interposed in a front and rear direction of the head portion and is supported by the head portion by using the jaw contact portion and the occiput contact portion as ends. The biological signal measuring equipment performs the measurement in the same manner as the case of measuring a wave motion of a short period, even in the case of measuring the wave motion of a long period generated in a head portion.

05-14-2015

20080312523

Apparatus and Method for Reducing Interference - An electronic apparatus for reducing interference in a desired signal, the apparatus comprising: (a) a plurality of measurement signal lines, each connected to a respective measurement signal electrode; and (b) one or more reference signal lines, each connected to respective one or more reference electrodes; each of said measurement signal lines or a respective group of said measurement signal lines being associated by being in close physical proximity with a respective one of said reference signal lines for a substantial part of their lengths, so that each measurement signal line or signal line group with its corresponding reference signal line forms a measurement signal line or measurement signal line group/reference signal line pair, said electronic apparatus further comprising subtraction means for subtracting an interference on each reference signal line from an interference signal on the associated measurement signal line or from each measurement signal line in the measurement signal line group in that measurement signal line or measurement signal line group/reference signal line pair, wherein at least one of the measurement signal electrodes is arranged to be in direct electrical connection with a subject and at least one of the reference signal electrodes is arranged to be in close physical proximity but not in direct electrical contact with the subject.

12-18-2008

20140114165

SYSTEMS AND METHODS FOR DETECTING BRAIN-BASED BIO-SIGNALS - The current invention includes systems and methods for detecting, by a sensor including at least two electrodes, a multicomponent brain-based bio-signal in an internal tissue of a patient, digitizing, by at least one computer processor communicatively coupled to the sensor, the multicomponent brain-based bio-signal, isolating, by the at least one computer processor, a plurality of subcomponent signals from the digitized multicomponent brain-based bio-signal, comparing isolated data from one or more of the isolated sub component signals, by the at least one computer processor, to predetermined baseline data, and generating, by the at least one computer processor, at least one of an instruction to a machine and a visual diagnosis of a condition, in response to said comparing isolated data to baseline data.

BIOSIGNAL MEASUREMENT ELECTRODE AND BIOSIGNAL MEASUREMENT APPARATUS - A biosignal measurement electrode includes a liquid retaining member, an electric plate, and a cover member. The liquid retaining member is configured to be elastically deformed and impregnated with conductive liquid, the liquid retaining member including a contact surface configured to be brought into contact with a living body surface. The electric plate is configured to be brought into contact with the conductive liquid. The cover member is configured to be elastically deformed and cover the liquid retaining member except for the contact surface.

03-20-2014

20150011857

SHIELDED MULTI-CHANNEL EEG HEADSET SYSTEMS AND METHODS - Embodiments of a shielded sensor headset including a plurality of electrodes are generally described herein. In some embodiments a sensor headset can include electrodes, traces, and connection terminals printed on a first side of a flexible insulating substrate; and a shield plane printed on a second side of the flexible insulating substrate, the shield plane providing protection against interference. In some embodiments a sensor headset can include a first and a second assembly each having a plurality of electrodes, the first and second assemblies being configured to mate such that the electrodes comply with the 10-20 standard for EEG electrode placement. In some embodiments a sensor headset can include a dual-layer foam reservoir disposed above individual electrodes. An inner layer of the dual-layer foam reservoir can be in contact with an electrode, include a conductive gel, and form a cavity for receiving additional gel through a perforation in the electrode.

01-08-2015

20100125190

Electrode System - An electrode system comprises electrode modules, flexible connectors, and sensors. Each electrode module defines a substantially central opening and has circuitry that includes an amplifier. A conductive ring is exposed in the opening of each electrode module. The flexible connectors include flexible circuitry coupled with the circuitry of the electrode modules. Each sensor includes an electrolytic hydrogel portion that is configured to contact a test subject and outwardly extending tabs that are in communication with the hydrogel portion. The tabs are configured to contact the conductive ring of an electrode module with the sensor is inserted in the opening of the electrode module. The system may thus sense evoked response potentials (ERPs) from the test subject through the electrolytic hydrogel portions, amplify those potentials, and communicate the amplified potentials through the circuitry of the flexible connectors. A control box may initiate ERP testing and store the test results.

05-20-2010

20150080696

MEASUREMENT DEVICE WITH ELECTROENCEPHALOGRAPHY AND ELECTROCARDIOGRAPHY FUNCTIONALITIES - A measurement device with electroencephalography (EEG) and electrocardiography (ECG) functionalities includes a first shell having ECG functionality and a second shell. The first shell includes a first contact and a second contact located at a first side of the first shell; and a third contact located at a second side of the first shell, wherein the second side of the first shell is substantially opposite to the first side of the first shell. The second shell includes a fixing device, for connecting with and fixing on the first shell; and a fourth contact, a fifth contact and a sixth contact, located at a first side of the second shell, for electrically connecting with the first contact, the second contact and the third contact respectively when the first shell is connected to and fixed on the fixing device, in order to perform EEG measurement.

03-19-2015

20140081117

EYE FATIGUE DETERMINATION APPARATUS AND EYE FATIGUE DETERMINATION METHOD - An eye fatigue determination apparatus includes: an electrooculogram obtainment unit that obtains an electrooculogram indicating a potential measured using an electrode placed near an eye of a viewer who is viewing video content, the electrooculogram being measured in a plurality of predetermined time sections during display of the video content; an impedance obtainment unit that obtains an impedance between the electrode and the viewer's skin at a position where the electrode is placed, the impedance being measured in the plurality of predetermined time sections; an electrooculogram correction unit that corrects the electrooculogram measured in the plurality of predetermined time sections and obtained by the electrooculogram obtainment unit, based on the impedance measured in the plurality of predetermined time sections and obtained by the impedance obtainment unit; and a fatigue determination unit that determines fatigue of the viewer's eye, based on the electrooculogram corrected by the electrooculogram correction unit.

03-20-2014

20140081115

METHOD AND SYSTEM FOR ON-LINE DECISION MAKING SUPPORT - A method for on-line decision making support, which includes sensing biological signals of a subject upon detection of a decision making process during a performance of a task, and recording biological activity of the subject. Upon completing the decision making process, the recorded biological activity is released to a data processing system for analysis, which compares the recorded biological activity with a profile model for the subject and calculates a confident value for the recorded biological activity against the profile model for the subject. If the confident value does not meet a predefined threshold, a post-processing procedure is performed, wherein the predefined threshold represents a desired performance of the subject on the task.

03-20-2014

20120253163

METHOD AND SYSTEM FOR POSITIONING A SENSOR - Embodiments of the present disclosure relate to sensor designs or shapes configured to facilitate placement of sensor electrodes and, thus, proper positioning of the sensors on patients. According to certain embodiments, a sensor may include a substrate that includes multiple electrodes, where a first electrode is configured to be placed on a patient's temple and a second electrode is configured to be placed on a patient's forehead directly above a patient's eyebrow. The sensor may include a particular shape and a fixed distance between the first and second electrodes to facilitate proper angling and positioning of the first and second electrodes as well as the other electrodes (e.g., third and fourth electrodes). Other embodiments may include a method for positioning the sensor on the patient, including a monitor with help screens.

10-04-2012

20140235990

MACHINE-BASED PATIENT-SPECIFIC SEIZURE CLASSIFICATION SYSTEM - This disclosure is directed to a machine-based patient-specific seizure classification system. In general, an example system may comprise a non-linear SVM seizure classification system-on-chip (SoC) with multichannel EEG data acquisition and storage for epileptic patients is presented. The SoC may integrate a hardware-efficient log-linear Gaussian Basis Function engine, floating point piecewise linear natural log, and low-noise, high dynamic range readout circuits. In at least one example implementation, the SoC may consume 1.83W/classification while classifying 8 channel results with an average detection rate, average false alarm rate and latency of 95.1%, 0.94% and <2 s, respectively.

08-21-2014

20150025352

METHOD AND DEVICE FOR DETERMINING BRAIN AND SCALP STATE - A method for determining brain state has the steps of attaching at least 2 first electrodes to the scalp of a subject at a separation, transmitting an electrical current between the at least 2 first electrodes, and measuring a first impedance between the at least 2 first electrodes to provide a resulting impedance. One embodiment has the further step of comparing the resulting impedance to pre-stored impedance measurements of the scalp to determine normal or pathological state. A further embodiment has the steps of attaching 2 first electrodes to the scalp of a subject at a separation and 2 second electrodes, transmitting a current between the first electrodes and measuring a first impedance between the second electrodes to provide a resulting impedance. The electrodes may be driven shield electrodes, and the method may further include comparing impedance measurements to pre-stored impedance measurements to determine normal and pathological state.

01-22-2015

20120029336

ELECTRODE ATTACHMENT STATE DETERMINATION SYSTEM, ELECTRODE ATTACHMENT STATE DETERMINATION METHOD, AND PROGRAM THEREOF - An electrode attachment state determination system includes: an electroencephalogram measurement section for measuring an electroencephalogram signal of a user by using at least one set of electrodes including a ground electrode, a reference electrode, and a measurement electrode; a frequency analysis section for performing a frequency analysis of the electroencephalogram signal; an insufficient electrode determination section for extracting at least one parameter of a total frequency power and a noise amount from a result of the frequency analysis, and through a comparison of a value of the parameter against a predetermined threshold value, determining whether the ground electrode, the reference electrode, or the measurement electrode has an insufficient state of attachment; and an output section for, when an insufficient state of attachment is determined, presenting information indicating the insufficient state of electrode attachment to the user.

02-02-2012

20150141789

SYSTEMS AND METHODS TO GATHER AND ANALYZE ELECTROENCEPHALOGRAPHIC DATA - Example methods are described herein that include obtaining electroencephalographic data from an example device worn by a subject. The device includes a central body portion and a plurality of extensions extending from the central body portion. Respective ones of the extension have ends carrying an electrode. The example device includes an adjustment band disposed along a longitudinal axis of the central body portion to adjust a position of the extensions. The example method also includes analyzing the data to determine a mental state of the subject.

05-21-2015

20130197339

METHOD OF MONITORING DEPTH OF ANESTHESIA AND APPARATUS FOR SAME - A method of monitoring depth of anesthesia comprises generating differential EEG signals from EEG signals acquired by electrode pairs during an anesthesia protocol, processing the differential EEG signals to determine at least one signal feature and monitoring changes in the at least one signal feature to determine depth of anesthesia. The at least one signal feature comprises at least one of normalized power of the differential EEG signals acquired from at least one of the electrode pairs, and wavelet bicoherence between the differential EEG signals acquired from at least two of the electrode pairs.

08-01-2013

20140200432

SYSTEMS, APPARATUSES, DEVICES, AND PROCESSES FOR SYNERGISTIC NEURO-PHYSIOLOGICAL REHABILITATION AND/OR FUNCTIONAL DEVELOPMENT - A system for facilitating a subject's functional development includes sensing devices configured for sensing mind state signals; sensing devices configured for sensing body state signals; and a set of processing resources configured for generating a mind state indicator/measure, a body state indicator/measure, and a mind-body synergy indicator/measure that corresponds to which each of the subject's mind state and body state are synergistically aligned for facilitating the subject's functional development. The system can be configured for concurrently presenting a set of activities involving a model body part; engaging in attempted imitation of the set of activities by way of attempted movement of a body part that is a mirror image of the model body part; presenting an indication of an extent to which each of the mind state and body state are cooperative with respect to performance of the set of activities; and presenting an indication of relaxation.

07-17-2014

20130096410

BIOSIGNAL PROCESSING APPARATUS, ELECTROENCEPHALOGRAPH, AND BIOSIGNAL PROCESSING METHOD - A biosignal processing apparatus includes a signal acquisition unit and a determination unit. The signal acquisition unit is configured to acquire an output signal of an electrode that is placed on a biological surface. The determination unit is connected to the signal acquisition unit to determine, based on first frequency characteristics being frequency characteristics of the output signal, whether the electrode is in a first state in which the electrode is electrically connected to a measurement site of the biological surface or in a second state in which the electrode is electrically disconnected to the measurement site.

04-18-2013

20110105878

Electrode For Use With A Template Cap - An electrode attached to the straps of and use with a template cap in making neurophysiological measurements. The electrode is configured to allow the user to quickly and accurately slide an electrode needle at a shallow adjustable angle into the scalp of the patient. The base of each electrode attaches to the cap at locations where measurements are to be made. The base supports a ramp that may be snapped into a clip on the base for storage and then springs resiliently from the clip when released. The electrode needle is carried by a slidable holder secured to the ramp at its slot and is slid forward following that slot when driving the needle down and through a small hole in the base of the electrode to insert it into the patient's scalp at the appropriate depth and angle.

05-05-2011

20150141788

TRANSDUCER ASSEMBLIES FOR DRY APPLICATIONS OF TRANDUCERS - A transducer assembly including a support terminal and at least one probe extending from the support terminal is adapted to enable a transducer to penetrate and slide through patches of hair covering a subject area of a person. The probe includes at least one leg structure supporting a transducer disposed at the distal end of the leg structure for sensing or stimulating the state of a particular property of a selected subject area when the transducer is applied by the leg structure to the selected subject area. The leg structure is so disposed in relation to the support terminal as to be disposed at a non-perpendicular angle to the subject area when the transducer assembly is applied to the selected subject area. The leg structure is adapted to flex when the transducer is applied under pressure to the selected subject area to thereby cause the transducer to slide on the subject area.

05-21-2015

20140024914

Device and Method for an Automated E.E.G. System for Auditory Evoked Responses - A dyslexia screening test system suitable for clinical use includes an integrated headset that efficiently and conveniently performs an auditory evoked response (AER) test by positioning electrodes about the ears of the subject. An integral control module automatically performs the test, providing simplified controls and indications to the clinician. A number of screening tests that are stored in the headset are periodically uploaded for billing, remote analysis and result reporting.

01-23-2014

20140024912

Neurophysiological Dry Sensor - Preferably, an embodiment of a sensor assembly includes at least a sensor probe assembly providing a plurality of conductive pins, a compressible electrically conductive member in electrical communication with the sensor probe assembly, and a signal processing circuit in electrical communication with the compressible electrically conductive member. Preferably, the sensor assembly of the preferred embodiment further includes at least a housing confining said sensor probe assembly, compressible electrically conductive member, and signal processing circuit to form said sensor assembly.

01-23-2014

20140142409

ELECTRODE SENSOR ASSEMBLY FOR ELECTRORETINOGRAPHY AND PATTERN ELECTRORETINOGRAPHY - A multilayer electrode sensor assembly for electroretinography and pattern electroretinography formed as a thin strip to fit under a lower eyelid and contain an electrode in line with the pupil of an eye with signals detected carried through an integrally formed thin conductive strip to a terminal to be connected to an electrical conductor for carrying such signals to an analyzer.

05-22-2014

20120157817

Methods for using electrical impedance tomography - Methods for use of EIT. Disclosed are: (1) EIT used to obtain a final solution to an EIT inverse problem for localizing tissues undergoing changes in impedance, which is used as a constraint on solving an EEG source localization inverse problem; (2) EIT used with MREIT, where the MREIT is used to constrain the solutions to the EIT inverse problem for the distribution of static tissue impedance; (3) EIT used with MREIT, where the MREIT is used to constrain the solutions to the EIT inverse problem for localizing tissues undergoing changes in impedance; and (4) EIT according to any of (1)-(3) as feedback for modifying at least one of the location, magnitude, and timing of currents injected for the purpose of neurostimulation.

06-21-2012

20130035579

METHODS FOR MODELING NEUROLOGICAL DEVELOPMENT AND DIAGNOSING A NEUROLOGICAL IMPAIRMENT OF A PATIENT - One variation of a method for modeling neurological development includes: aggregating electroencephalography (EEG) data that comprise multiple EEG signals of each user in a set of users, EEG signals of each user recorded on multiple distinct dates, the set of users comprising a plurality of users of various known neurological statuses; identifying a synchronization pattern trend within the EEG data of the set of users; and correlating the synchronization pattern trend with neurological development within the set of users.

Nerve Stimulation Electrodes - Described herein are nerve stimulating electrodes for use in evoked potential electrophysiological recording procedures and associated methods for use thereof. In one embodiment, a stimulating electrode assembly is provided that includes a non-conductive substrate, a first electrode mounted on the non-conductive substrate, and a second electrode mounted on the non-conductive substrate. The first and second electrodes are spaced apart along a longitudinal length of the assembly and extend along a lateral width of the assembly such that the electrode can be positioned at a plurality of laterally offsetting positions relative to a nerve extending longitudinally between the first and second electrodes while remaining in contact with the nerve.

05-22-2014

20130211224

METHOD AND DEVICE FOR REMOVING EEG ARTIFACTS - Systems and methods for automatically identifying segments of EEG signals or other brain electrical activity signals that contain artifacts, and/or editing the signals to remove segments that include artifacts

ELECTRODE SYSTEM - An electrode system comprises electrode modules, flexible connectors, and sensors. Each electrode module defines a substantially central opening and has circuitry that includes an amplifier. A conductive ring is exposed in the opening of each electrode module. The flexible connectors include flexible circuitry coupled with the circuitry of the electrode modules. Each sensor includes an electrolytic hydrogel portion that is configured to contact a test subject and outwardly extending tabs that are in communication with the hydrogel portion, The tabs are configured to contact the conductive ring of an electrode module with the sensor is inserted in the opening of the electrode module. The system may thus sense evoked response potentials (ERPs) from the test subject through the electrolytic hydrogel portions, amplify those potentials, and communicate the amplified potentials through the circuitry of the flexible connectors. A control box may initiate ERP testing and store the test results.

05-09-2013

20130237793

METHOD AND APPARATUS FOR DETECTING CARDIAC SIGNALS - Devices and systems provide methods for detecting cardiac signals from head or facial biopotential sensors. In one embodiment, a facial biopotential signal is measured by a set of sensors. A processor derives a cardiac signal from the facial biopotential signal. Optionally, heart rate is detected from the cardiac signal. Heart rate variability may be determined and evaluated by the processor to generate warnings or messages from the evaluation. One or more head or facial biopotential electrodes for measuring the facial biopotential signal may be integrated in or at a contact surface of head support structures such as a headgear support or respiratory treatment mask. In some such embodiments a controller of a respiratory treatment apparatus may serve as a cardiac signal detector by processing the facial biopotential signal from the sensors and may make control adjustments or generate warnings based on an evaluation of detected signals.

09-12-2013

20130310676

EEG Hair Band - The present invention relates to hair band EEGs. More particularly, the present invention relates to hair bands.

11-21-2013

20110066020

MULTI-CHANNEL EEG ELECTRODE SYSTEM - A multi-channel EEG electrode system has a plurality of electrodes operable to sense an EEG signal. The electrodes are arranged in a three-dimensional pattern and each has an identification and includes an indicating unit that displays information at a position at which it is placed. An image sensing device acquires stereoscopic images of the plurality of electrodes. A control device sequentially causes the indicating unit of each electrode to display the information and simultaneously cause the image sensing device to acquire the stereoscopic images of each electrode. A processing device calculates position information of the electrodes from the stereoscopic images and to correlate the position information to the identification of each electrode.

03-17-2011

20130253300

ELECTRODE SYSTEM WITH RIGID-FLEX CIRCUIT - An electrode system comprises a flexible circuit substrate, a plurality of electrode modules, and a plurality of sensors. The flexible circuit substrate comprises a flexible material and traces supported by the flexible material. The flexible circuit substrate extends through at least two of the electrode modules such that the electrode modules encompass portions of the flexible circuit substrate. Each electrode module comprises at least one rigid circuit member configured to process ERPs of a test subject. The rigid circuit members are layered against the flexible circuit substrate such that the rigid circuit members and the flexible circuit substrate together form a rigid-flex circuit. The sensors may be removably coupled with at least one of the plurality of electrode modules and may sense ERPs from the test subject.

09-26-2013

20140213874

BRAIN BIOFEEDBACK DEVICE WITH RADIALLY ADJUSTABLE ELECTRODES - A head-mountable EEG electrode-containing device is provided based on radially adjustable electrodes to fit the wearer's unique head size and shape. The head-mountable device with an electrode array positioned therein includes multiple head-mountable device sections that are interconnected by mechanical fasteners to facilitate sizing and positioning of the head-mountable device. An array of resilient sleeves is positioned within each head-mountable device section. Each resilient sleeve houses an individual electrode and is deformable for self-orienting. The deformation of the sleeve is such that a central axis passing through the individual electrode housed within the resilient sleeve is maintained in a position approximately normal to a plane tangential to a scalp portion positioned beneath that electrode.

SYSTEMS AND METHODS TO GATHER AND ANALYZE ELECTROENCEPHALOGRAPHIC DATA - Example devices are disclosed herein that include a central body portion and a plurality of extensions extending from the central body portion, each extension having an end coupled to an electrode. The example device also includes an adjustment band disposed along a longitudinal axis of the central body to adjust a position of the extensions.

02-20-2014

20140051960

SYSTEMS AND METHODS TO GATHER AND ANALYZE ELECTROENCEPHALOGRAPHIC DATA - Example devices are disclosed herein that include a first elongated band coupled to a first housing to be located on a first side of a head of a subject and a second housing to be located near a second side of the head of the subject, the first elongated band comprising a first set of electrodes. The example device also includes a second elongated band coupled to the first housing and to the second housing, the second elongated band comprising a second set of electrodes. In addition, the device includes a third elongated band coupled to the first housing and to the second housing, the third elongated band comprising a third set of electrodes.

Electrodes Adapted for Transmitting or Measuring Voltages Through Hair - An electrode that functions alone, in clusters or arrays can be used to measure and/or deliver voltages through skin covered with hair by achieving reliable skin contact. In one form, a composite metal electrode has several raised points capable of passing through hair to contact the skin directly between hairs. Electrode points are distributed evenly over a flat circular or curved base to create a composite electrode or cluster in which all electrode points electrically couple to one another and to an output device. In another form of the invention, each electrode point is connected by a separate conductor wire to a selector that evaluates the signal during use and determines which of the electrode points are to be coupled to an output device.

10-17-2013

20130231545

Method And Device For Quick Press On EEG Electrode - Embodiments relate to methods and systems for monitoring bioelectric potentials. In some instances, an electrode is applied to a patient's skin. The electrode may be at least partly inserted into the patient's skin, such as by inserting at least part of one or more teeth underneath the skin.